World's FASTEST Tennis Serve Ever! - 263.4 kmh (163.7 mph)

Record-breaking Match: “The moment that etched Sam Groth's name in the history books occurred at the Bossan tournament in 2012. Facing off against Uładzimir Ihnatsik, Groth unleashed a serve that reached an astounding speed of 263 km/h, setting a new benchmark for the fastest serve ever recorded in professional tennis.”